:root {
            --primary-color: #F15A24; /* XAMPP标志橙色 */
            --secondary-color: #2C3E50; /* 深蓝色背景 */
            --accent-color: #3498DB; /* 亮蓝色 */
            --light-color: #ECF0F1;
            --dark-color: #2C3E50;
            --text-color: #333;
            --text-light: #7F8C8D;
        }
        
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', 'Microsoft YaHei', sans-serif;
        }
        
        body {
            color: var(--text-color);
            line-height: 1.6;
            background-color: #f9f9f9;
        }
        
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        
        /* 头部导航 */
        header {
            background-color: white;
            box-shadow: 0 2px 10px rgba(0,0,0,0.1);
            position: fixed;
            width: 100%;
            top: 0;
            z-index: 1000;
        }
        
        .nav-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 15px 0;
        }
        
        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
        }
        
        .logo img {
            width: 40px;
            height: 40px;
        }
        
        .logo-text {
            font-size: 24px;
            font-weight: 700;
            color: var(--primary-color);
        }
        
        .nav-links {
            display: flex;
            list-style: none;
            gap: 30px;
        }
        
        .nav-links a {
            text-decoration: none;
            color: var(--dark-color);
            font-weight: 600;
            font-size: 16px;
            transition: color 0.3s;
        }
        
        .nav-links a:hover {
            color: var(--primary-color);
        }
        
        .mobile-menu-btn {
            display: none;
            font-size: 24px;
            background: none;
            border: none;
            color: var(--dark-color);
            cursor: pointer;
        }
        
        /* 英雄区域 */
        .hero {
            padding: 150px 0 80px;
            background: linear-gradient(135deg, var(--secondary-color) 0%, #1a2530 100%);
            color: white;
        }
        
        .hero-container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 40px;
        }
        
        .hero-content {
            flex: 1;
        }
        
        .hero-title {
            font-size: 48px;
            margin-bottom: 20px;
            line-height: 1.2;
        }
        
        .hero-subtitle {
            font-size: 20px;
            margin-bottom: 30px;
            color: var(--light-color);
            max-width: 600px;
        }
        
        .hero-image {
            flex: 1;
            text-align: center;
        }
        
        .hero-image img {
            max-width: 100%;
            border-radius: 10px;
            box-shadow: 0 10px 30px rgba(0,0,0,0.3);
        }
        
        /* 按钮样式 */
        .btn {
            display: inline-block;
            padding: 15px 30px;
            background-color: var(--primary-color);
            color: white;
            text-decoration: none;
            border-radius: 5px;
            font-weight: 600;
            font-size: 18px;
            border: none;
            cursor: pointer;
            transition: all 0.3s;
            box-shadow: 0 4px 6px rgba(0,0,0,0.1);
        }
        
        .btn:hover {
            background-color: #e04a1a;
            transform: translateY(-2px);
            box-shadow: 0 6px 12px rgba(0,0,0,0.15);
        }
        
        .btn-secondary {
            background-color: var(--accent-color);
        }
        
        .btn-secondary:hover {
            background-color: #2980b9;
        }
        
        /* 内容区域 */
        section {
            padding: 80px 0;
        }
        
        .section-title {
            text-align: center;
            font-size: 36px;
            margin-bottom: 50px;
            color: var(--dark-color);
            position: relative;
        }
        
        .section-title:after {
            content: '';
            position: absolute;
            width: 80px;
            height: 4px;
            background-color: var(--primary-color);
            bottom: -15px;
            left: 50%;
            transform: translateX(-50%);
        }
        
        /* 功能介绍 */
        .features-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 30px;
        }
        
        .feature-card {
            background-color: white;
            border-radius: 10px;
            padding: 30px;
            box-shadow: 0 5px 15px rgba(0,0,0,0.05);
            transition: transform 0.3s;
        }
        
        .feature-card:hover {
            transform: translateY(-5px);
        }
        
        .feature-icon {
            font-size: 40px;
            color: var(--primary-color);
            margin-bottom: 20px;
        }
        
        .feature-title {
            font-size: 22px;
            margin-bottom: 15px;
            color: var(--dark-color);
        }
        
        /* 下载区域 */
        .download-section {
            background-color: var(--light-color);
        }
        
        .download-container {
            max-width: 800px;
            margin: 0 auto;
            text-align: center;
        }
        
        .download-box {
            background-color: white;
            border-radius: 10px;
            padding: 40px;
            box-shadow: 0 5px 20px rgba(0,0,0,0.1);
        }
        
        .download-qr {
            margin: 30px auto;
            width: 200px;
            height: 200px;
            padding: 15px;
            background-color: white;
            border-radius: 8px;
            box-shadow: 0 0 10px rgba(0,0,0,0.1);
        }
        
        .download-qr img {
            width: 100%;
            height: 100%;
        }
        
        .download-buttons {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 20px;
            margin-top: 30px;
        }
        
        .download-link {
            margin-top: 20px;
            color: var(--text-light);
        }
        
        /* 使用教程 */
        .tutorial-steps {
            max-width: 800px;
            margin: 0 auto;
        }
        
        .step {
            display: flex;
            margin-bottom: 40px;
            background-color: white;
            border-radius: 10px;
            overflow: hidden;
            box-shadow: 0 5px 15px rgba(0,0,0,0.05);
        }
        
        .step-number {
            background-color: var(--primary-color);
            color: white;
            font-size: 24px;
            font-weight: 700;
            padding: 20px;
            display: flex;
            align-items: center;
            justify-content: center;
            min-width: 80px;
        }
        
        .step-content {
            padding: 25px;
            flex: 1;
        }
        
        .step-title {
            font-size: 20px;
            margin-bottom: 10px;
            color: var(--dark-color);
        }
        
        /* 常见问题 */
        .faq-container {
            max-width: 800px;
            margin: 0 auto;
        }
        
        .faq-item {
            margin-bottom: 20px;
            background-color: white;
            border-radius: 8px;
            overflow: hidden;
            box-shadow: 0 3px 10px rgba(0,0,0,0.05);
        }
        
        .faq-question {
            padding: 20px;
            font-weight: 600;
            font-size: 18px;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            background-color: #f8f9fa;
        }
        
        .faq-answer {
            padding: 0 20px;
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease-out, padding 0.3s;
        }
        
        .faq-item.active .faq-answer {
            padding: 20px;
            max-height: 500px;
        }
        
        .faq-icon {
            transition: transform 0.3s;
        }
        
        .faq-item.active .faq-icon {
            transform: rotate(45deg);
        }
        
        /* 模态框 */
        .modal {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background-color: rgba(0,0,0,0.7);
            z-index: 2000;
            align-items: center;
            justify-content: center;
        }
        
        .modal-content {
            background-color: white;
            border-radius: 10px;
            padding: 40px;
            text-align: center;
            max-width: 500px;
            width: 90%;
            position: relative;
        }
        
        .close-modal {
            position: absolute;
            top: 15px;
            right: 15px;
            font-size: 24px;
            cursor: pointer;
            color: var(--text-light);
        }
        
        /* 页脚 */
        footer {
            background-color: var(--secondary-color);
            color: white;
            padding: 50px 0 20px;
        }
        
        .footer-content {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            margin-bottom: 40px;
        }
        
        .footer-logo {
            flex: 1;
            min-width: 250px;
            margin-bottom: 30px;
        }
        
        .footer-links {
            flex: 1;
            min-width: 200px;
            margin-bottom: 30px;
        }
        
        .footer-links h3 {
            font-size: 20px;
            margin-bottom: 20px;
            color: var(--light-color);
        }
        
        .footer-links ul {
            list-style: none;
        }
        
        .footer-links li {
            margin-bottom: 10px;
        }
        
        .footer-links a {
            color: #bdc3c7;
            text-decoration: none;
            transition: color 0.3s;
        }
        
        .footer-links a:hover {
            color: var(--primary-color);
        }
        
        .copyright {
            text-align: center;
            padding-top: 20px;
            border-top: 1px solid rgba(255,255,255,0.1);
            color: #95a5a6;
            font-size: 14px;
        }
        
        /* 响应式设计 */
        @media (max-width: 992px) {
            .hero-container {
                flex-direction: column;
                text-align: center;
            }
            
            .hero-title {
                font-size: 36px;
            }
            
            .hero-subtitle {
                font-size: 18px;
            }
        }
        
        @media (max-width: 768px) {
            .nav-links {
                display: none;
                position: absolute;
                top: 100%;
                left: 0;
                width: 100%;
                background-color: white;
                flex-direction: column;
                padding: 20px;
                box-shadow: 0 5px 10px rgba(0,0,0,0.1);
            }
            
            .nav-links.active {
                display: flex;
            }
            
            .mobile-menu-btn {
                display: block;
            }
            
            .section-title {
                font-size: 28px;
            }
            
            .step {
                flex-direction: column;
            }
            
            .step-number {
                min-height: 60px;
                min-width: 100%;
            }
        }